Loans - Analysis Of Past Due Loans By Portfolio Segment (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Total	$ 393,518	$ 374,991
Non-Accrual Loans	5	837
30-59 Days Past Due [Member]
Total Past Due	259	123
60-89 Days Past Due [Member]
Total Past Due	21	616
Greater than 90 Days [Member]
Total Past Due	5	235
Total Past Due
Total Past Due	285	974
Current
Total Past Due	393,233	374,017
CRE [Member]
Total	77,951	72,057
CRE [Member] \| Current
Total Past Due	77,951	72,057
MF [Member]
Total	8,564	8,998
MF [Member] \| Current
Total Past Due	8,564	8,998
C+I [Member]
Total	25,090	26,851
C+I [Member] \| Current
Total Past Due	25,090	26,851
ADL [Member]
Total	20,005	21,365
ADL [Member] \| Current
Total Past Due	20,005	21,365
RES [Member]
Total	246,057	234,199
Non-Accrual Loans		722
RES [Member] \| 30-59 Days Past Due [Member]
Total Past Due	154
RES [Member] \| 60-89 Days Past Due [Member]
Total Past Due		487
RES [Member] \| Greater than 90 Days [Member]
Total Past Due		235
RES [Member] \| Total Past Due
Total Past Due	154	722
RES [Member] \| Current
Total Past Due	245,903	233,477
HELOC [Member]
Total	9,379	6,947
Non-Accrual Loans		115
HELOC [Member] \| 30-59 Days Past Due [Member]
Total Past Due		117
HELOC [Member] \| 60-89 Days Past Due [Member]
Total Past Due		129
HELOC [Member] \| Total Past Due
Total Past Due		246
HELOC [Member] \| Current
Total Past Due	9,379	6,701
CON [Member]
Total	6,472	4,574
Non-Accrual Loans	5
CON [Member] \| 30-59 Days Past Due [Member]
Total Past Due	105	6
CON [Member] \| 60-89 Days Past Due [Member]
Total Past Due	21
CON [Member] \| Greater than 90 Days [Member]
Total Past Due	5
CON [Member] \| Total Past Due
Total Past Due	131	6
CON [Member] \| Current
Total Past Due	$ 6,341	$ 4,568

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